a man could be under arrest for sending letters laced with ricin to president obama and senator. the president was sent to the president was intercepted yesterday. the secret service says the man, kenneth curtis sent both letters. officials say signed with initials kc. nannette miranda has been looking at the security officers screen mail sent to our capitol and reports now from sacramento. >> this is where letters are sorted out by staff. >> at california state capitol they use these security procedures for mail coming into the governor's, state lawmakers and other leaders as feds do. tony beard says it's screened first for things like ricin and anthrax before mail ever gets to the capitol rail mail room. >> just technology but also a combination of skills we teach people. there are fbi protocols to follow. >> the procedures work with washington, d.c.. they were discovered in the off site location. the screening doesn't work that. is where training can provide protection. >> there is a fine line between threatening and having a right to disagree. >> nothing chemical has been det